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한국고무학회> Elastomers and composites

Elastomers and composites update

  • : 한국고무학회
  • : 공학분야  >  화학공학
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  • : 고무학회지(~1997) → 엘라스토머(1998~) → elastomers and composites(2009~)

수록정보
수록범위 : 1권1호(1966)~57권3호(2022) |수록논문 수 : 1,687
Elastomers and composites
57권3호(2022년 09월) 수록논문
최근 권호 논문
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KCI등재

저자 : Seonghyeon Ahn , Chanil Park , Jae-hak Choi , Yong Seok Kim , Youngjae Yoo

발행기관 : 한국고무학회 간행물 : Elastomers and composites 57권 3호 발행 연도 : 2022 페이지 : pp. 81-91 (11 pages)

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Composites based on engineering thermoplastics exhibit excellent mechanical and thermal properties and simple processing and reprocessing attributes, and are widely used in the aerospace, three-dimensional (3D) printing, and automobile industries. Polyphenylene sulfide (PPS) is one of the most desirable engineering thermoplastics, owing to its superior thermal performance, inherent flame retardancy resulting from the presence of sulfur in its backbone structure, chemical resistance, and satisfactory electrical properties. However, pure PPS resin has limited applicability owing to its brittleness. To compensate for these shortcomings, various filler materials are frequently used in the manufacture of PPS composites. In this review, we would like to present the correlation between the structure and physical properties of PPS composite materials using various fillers.

KCI등재

저자 : Uiyeong Jung , Sung-seen Choi

발행기관 : 한국고무학회 간행물 : Elastomers and composites 57권 3호 발행 연도 : 2022 페이지 : pp. 92-99 (8 pages)

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A large amount of particles on the roads is produced by friction between the vehicles and the road surface and by inflow from outside. The type of these particles affects the abrasion behavior of tire tread. In this study, road dust collected at a bus stop was separated by size, and the particles with sizes of 106-212 mm were analyzed. The particles were separated by density using NaI and NaBr aqueous solutions with densities in the range of 1.10-1.80 g/cm3 with the 0.10 g/cm3 interval. In the road dust sample, the following particle types were found: tire-road wear particles (TRWPs), asphalt pavement wear particles (APWPs), plant-related particles (PRPs), road paint wear particles (RPWPs), and plastic particles (PPs). The densities of TRWPs, APWPs, PRPs, and RPWPs were 1.20-1.80, >1.60, >1.10, and >1.40 g/cm3, respectively, while PPs were found in all density ranges. Additionally, many small mineral particles were observed on the particles. Order of the relative content of the particles was PRP > TRWP > APWP ~ RPWP > PP. APWPs that were stuck to TRWP could be removed by chloroform treatment. The shapes of the particles were characterized using their magnified images.

KCI등재

저자 : Seok Kyu Moon , Eun-jin Kim , Yong Rok Kwon , Jung Soo Kim , Hae Chan Kim , Han Soo Park , Dong Hyun Kim

발행기관 : 한국고무학회 간행물 : Elastomers and composites 57권 3호 발행 연도 : 2022 페이지 : pp. 100-106 (7 pages)

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Waterborne polyurethane-acrylate(WPUA) dispersions were prepared by surfactant-free emulsion polymerization in a two-step process. In the first step, polytetrahydrofuran, isophorone diisocyanate, dimethylol proponic acid, and 2- hydroxyethyl methacrylate were used to synthesize a vinyl-terminated polyurethane prepolymer. In the second step, styrene, methyl methacrylate, butyl acrylate, and different multi-functional crosslinkers were copolymerized. 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, and pentaerythritol tetraacrylate were used as the crosslinkers, and their effect on the mechanical and thermal properties of WPUA was investigated. Overall, as the number of functional groups of the crosslinker increased, the gel fraction improved to 79.26%, the particle size increased from 75.9 nm to 148.7 nm, and the tensile strength was improved from 5.86 MPa to 12.40 MPa. In thermal properties, the glass transition temperature and decomposition temperature increased by 9.9℃ and 18℃, respectively. The chemical structures of the WPUA dispersions were characterized by Fourier-transform infrared spectroscopy. The synthesized WPUA has high potential for applications such as coatings, leather coatings, adhesives, and wood finishing.

KCI등재

저자 : Chun-sik Jung , Seok-ho Hwang

발행기관 : 한국고무학회 간행물 : Elastomers and composites 57권 3호 발행 연도 : 2022 페이지 : pp. 107-113 (7 pages)

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The effects of fillers [talc, calcium carbonate, glass fiber, and EBR (ethylene-butene rubber)] on the shrinkage and mechanical properties of injection-molded polypropylene composites were investigated. The shrinkage correlated with the shape of the filler particles: at the same amount added, glass fibers with a large aspect ratio had the greatest effect on the shrinkage of polypropylene composites, followed by flake-shaped talc and granular calcium carbonate. It was confirmed that the addition of EBR rubber as an impact strength modifier reduced shrinkage proportionally to the added content. In addition, the addition of glass fiber resulted in the greatest increases in tensile and flexural strengths.

KCI등재

저자 : Hyun-myung Son , Seok-ho Yoon , Ki-ho Lee , Min-young Lyu

발행기관 : 한국고무학회 간행물 : Elastomers and composites 57권 3호 발행 연도 : 2022 페이지 : pp. 114-120 (7 pages)

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The tensile properties of the extruded PC film were measured in the extrusion direction and perpendicular to the extrusion direction. The measured properties were the elastic modulus and Poisson's ratio at the glass transition temperature of PC. The measured orthotropic properties of the film were used for the computer simulation of vacuum forming. In this simulation, three mold shapes were tested: dome, trapezoid, and cubic, and the vacuum was applied between the mold surface and the heated film. The stress, strain, thickness, and stretch ratio distributions of the film in different mold shapes were observed and compared. The thermoforming simulation method used in this study and the obtained results, considering the determined orthotropic properties, can be applied to the thermoforming of various three-dimensional shapes.

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